var en = {
  pdfdemo: {
  }
};
en.pdfdemo.xz = 'Download PDF';// 下载pdf
en.pdfdemo.slylxz = 'Pdf example: PDF preview, Download';// PDF示例：pdf预览、下载
en.pdfdemo.yl = 'Preview HTML';// 预览html
en.pdfdemo.yl = 'Preview PDF';// 预览pdf
window.langEn['pdfdemo'] = en['pdfdemo'];
window.langEn['pdfdemo'] = en['pdfdemo'];